EVIL ENERGY 8AN to AN6 ORB Male O-Ring Adapter Pair — 6061-T6 Aluminum, NBR O-Ring Seal

The EVIL ENERGY 8AN flare to AN6 ORB male O-ring adapter is a durable aluminum fitting that converts 8AN (3/4-16) flare threads to AN6 (9/16-18) ORB with a reusable O-ring seal — sold as a pair.

When you need to join dissimilar fuel or oil lines without welding or custom hoses, this adapter provides a compact, serviceable connection that combines a 37° flare sealing face with an O-ring sealed ORB male. Machined from 6061-T6 aluminum and fitted with an NBR O-ring, the two-piece set is rated for typical automotive fluid system pressures and temperatures, making it useful in fuel rail, regulator, pump, oil cooler, and filter installations.

How does this adapter create a leak-resistant connection?

The adapter uses two complementary sealing methods: a 37° flare on the 8AN side and an O-ring against the AN6 ORB seat. The flare compresses against the mating surface for metal-to-metal contact while the O-ring provides a soft, pressure-activated seal on the ORB side.

• 8AN flare uses a 37° sealing angle for proven flare-style joints
• AN6 ORB side relies on an NBR O-ring for dynamic pressure sealing
• Combination reduces vibration-related seepage compared to single-method fittings

What are the material, temperature, and pressure limits?

Body construction from 6061-T6 aluminum balances strength and corrosion resistance while keeping weight low. The adapter’s rated working pressure and temperature ranges cover most automotive and light-industrial fluid systems, and the NBR O-ring tolerates the typical operating window for fuels and oils.

• Body material: 6061-T6 aluminum for strength and light weight
• Working pressure: up to 1500 PSI under recommended conditions
• Temperature: adapter -65°F to 252°F; O-ring -4°F to 392°F

Which applications and systems are these fittings suited for?

These adapters are intended for routing fuel and oil where an 8AN flare connection must mate to an AN6 ORB port. They are commonly used at fuel rails, pumps, regulators, filters, and oil cooler lines where a reliable, serviceable joint is required.

• Fuel rail and fuel pressure regulator hookups
• Fuel pump and filter connections in aftermarket setups
• Oil cooler or accessory lines requiring AN6 ORB ports

How do I install and maintain the adapter for best performance?

Installation is straightforward: thread the flare side into the matching 8AN male or flare fitting and seat the ORB side into the AN6 port with the O-ring in place. Use appropriate torque for aluminum fittings and inspect the O-ring periodically for wear; replace the O-ring if hardened, cracked, or deformed.

• Hand-start threads, then tighten to recommended torque for aluminum AN fittings
• Ensure O-ring is clean, lubricated, and correctly seated before final assembly
• Periodically check for seepage and replace O-ring as preventive maintenance

Who is this for: Automotive builders, tuners, and hobbyists who combine aftermarket fuel and oil components will find these EVIL ENERGY adapters useful for converting between flare and ORB interfaces. They are appropriate for engine bays and accessory plumbing where compact, serviceable connections are needed; however, always verify compatibility with your specific fluid type and system pressure before installation.